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.TH PTHREAD_SETSCHEDPRIO 3C "Apr 1, 2008"
.SH NAME
pthread_setschedprio \- dynamic thread scheduling parameters access
.SH SYNOPSIS
.LP
.nf
cc \fB-mt\fR [ \fIflag\fR... ] \fIfile\fR... \fB-lpthread\fR [ \fIlibrary\fR... ]
#include <pthread.h>

\fBint\fR \fBpthread_setschedprio\fR(\fBpthread_t\fR \fIthread\fR, \fBint\fR \fIprio\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBpthread_setschedprio()\fR function sets the scheduling priority for the
thread whose thread ID is given by \fIthread\fR to the value given by
\fIprio\fR.
.sp
.LP
If the \fBpthread_setschedprio()\fR function fails, the scheduling priority of
the target thread is not changed.
.SH RETURN VALUES
.sp
.LP
If successful, the \fBpthread_setschedprio()\fR function returns 0; otherwise,
an error number is returned to indicate the error.
.SH ERRORS
.sp
.LP
The \fBpthread_setschedprio()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 10n
The value of \fIprio\fR is invalid for the scheduling policy of the specified
thread.
.RE

.sp
.ne 2
.na
\fB\fBEPERM\fR\fR
.ad
.RS 10n
The caller does not have the appropriate permission to set the priority to the
value specified.
.RE

.sp
.ne 2
.na
\fB\fBESRCH\fR\fR
.ad
.RS 10n
The value specified by thread does not refer to an existing thread.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Committed
_
MT-Level	MT-Safe
_
Standard	See \fBstandards\fR(7).
.TE

.SH SEE ALSO
.sp
.LP
.BR pthread_getschedparam (3C),
.BR attributes (7),
.BR standards (7)
